Mexico, Canada and others may be exempted from US tariffs

White House press secretary Sarah Huckabee Sanders listens to a reporter’s question during the daily briefing at the White House on Wednesday. (Susan Walsh/AP Photo)

WASHINGTON — The White House said Wednesday that Mexico, Canada and other countries may be spared from President Donald Trump’s planned steel and aluminum tariffs under national security “carve-outs,” a move that could soften the blow amid threats of retaliation by trading partners and dire economic warnings from lawmakers and business groups.